A museum dedicated to the alleged Roswell Incident.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

A local prank turned town icon.

The upstairs reading room is packed with millions of rare books, literary manuscripts, and historical treasures.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

This failed condo development was reborn as a street art hub.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A time-capsule monument reminding future generations of the importance of efficient and effective use of natural resources.

The top of a giant mesa, just outside of Amarillo, appears to float in the sky above.

The Grand Canyon of Texas.

A pair of giant legs paying homage to a poem, a king, and it would seem, socks.

The only nuclear weapon assembly and disassembly plant in the U.S.

Enormous pendulum helps keep Taiwan's tallest building from swaying.

Grandpa Rainbow felt the neighborhood needed some color, so he picked up a paintbrush and went to work.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.